URL
https://opencores.org/ocsvn/openmsp430/openmsp430/trunk
/*===========================================================================*/
/* Copyright (C) 2001 Authors */
/* */
/* This source file may be used and distributed without restriction provided */
/* that this copyright statement is not removed from the file and that any */
/* derivative work contains the original copyright notice and the associated */
/* disclaimer. */
/* */
/* This source file is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU Lesser General Public License as published */
/* by the Free Software Foundation; either version 2.1 of the License, or */
/* (at your option) any later version. */
/* */
/* This source is distributed in the hope that it will be useful, but WITHOUT*/
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
/* License for more details. */
/* */
/* You should have received a copy of the GNU Lesser General Public License */
/* along with this source; if not, write to the Free Software Foundation, */
/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
/* */
/*===========================================================================*/
/* SINGLE-OPERAND ARITHMETIC: CALL INSTRUCTION */
/*---------------------------------------------------------------------------*/
/* Test the CALL instruction. */
/* */
/* Author(s): */
/* - Olivier Girard, olgirard@gmail.com */
/* */
/*---------------------------------------------------------------------------*/
/* $Rev: 200 $ */
/* $LastChangedBy: olivier.girard $ */
/* $LastChangedDate: 2015-01-21 23:01:31 +0100 (Wed, 21 Jan 2015) $ */
/*===========================================================================*/
.include "pmem_defs.asm"
.global main
main:
/* -------------- TEST INSTRUCTION WITH STANDARD REGISTERS AS ARGUMENT ------------------- */
# Initialization
#------------------------
mov #DMEM_252, r1 ;# Initialize stack pointer
mov #0x0000, r5 ;# Initialize R5
mov #0x1000, r15
# Addressing mode: Rn
#------------------------
mov #0x0000, r5
mov #TEST_ROUTINE_RN, r4
mov #0x5555, &0x0300
call r4 ;# CALL TEST_ROUTINE_RN
mov #0x2000, r15
# Addressing mode: @Rn
#------------------------
mov #DMEM_212, r4
mov #0x0000, r5
mov #TEST_ROUTINE_aRN, &DMEM_212
mov #0x5555, &DMEM_300
call @r4 ;# CALL TEST_ROUTINE_aRN
mov #0x3000, r15
# Addressing mode: @Rn+
#------------------------
mov #DMEM_216, r4
mov #0x0000, r5
mov #TEST_ROUTINE_aRNi, &DMEM_216
mov #0x5555, &DMEM_300
call @r4+ ;# CALL TEST_ROUTINE_aRNi
mov #0x4000, r15
# Addressing mode: #N
#------------------------
mov #0x0000, r5
mov #0x5555, &DMEM_300
call #TEST_ROUTINE_N ;# CALL TEST_ROUTINE_N
mov #0x5000, r15
# Addressing mode: X(Rn)
#------------------------
mov #DMEM_200, r4
mov #0x0000, r5
mov #TEST_ROUTINE_xRN, &DMEM_21A
mov #0x5555, &DMEM_300
call 26(r4) ;# CALL TEST_ROUTINE_xRN
mov #0x6000, r15
# Addressing mode: EDE
#------------------------
.set EDE_21E, DMEM_21E+PMEM_EDE_LENGTH
mov #0x0000, r5
mov #TEST_ROUTINE_EDE, &DMEM_21E
mov #0x5555, &DMEM_300
call EDE_21E ;# CALL TEST_ROUTINE_EDE
mov #0x7000, r15
# Addressing mode: &EDE
#------------------------
.set aEDE_220, DMEM_220
mov #0x0000, r5
mov #TEST_ROUTINE_aEDE, &aEDE_220
mov #0x5555, &DMEM_300
call &aEDE_220 ;# CALL TEST_ROUTINE_aEDE
mov #0x8000, r15
/* -------------- TEST INSTRUCTION WITH SR AS ARGUMENT ------------------- */
# Addressing mode: SR
#------------------------
mov #0x0000, r5
nop
#call r1 ;# NOT VALID BECAUSE IT JUMPS IN THE DATA MEMORY
nop ;# WHICH IS NOT EXECUTABLE
mov #0x9000, r15
# Addressing mode: @SR
#------------------------
mov #DMEM_252, r1 ;# Initialize stack pointer
push #TEST_ROUTINE_RN
push #TEST_ROUTINE_aRN
push #TEST_ROUTINE_aRNi
mov r1, r13 ; backup stack for later
push #TEST_ROUTINE_N
push #TEST_ROUTINE_xRN
push #TEST_ROUTINE_EDE
push #TEST_ROUTINE_aEDE
nop
mov r13, r1
mov #0x0000, r5
nop
call @r1 ;# CALL #TEST_ROUTINE_N (r5 = 0xabcd)
nop
mov #0xa000, r15
# Addressing mode: @SR+
#------------------------
mov #DMEM_252, r1 ;# Initialize stack pointer
push #TEST_ROUTINE_SPECIAL_aRNi
push #TEST_ROUTINE_RN
push #TEST_ROUTINE_aRN
push #TEST_ROUTINE_aRNi
mov r1, r13 ; backup stack for later
push #TEST_ROUTINE_N
push #TEST_ROUTINE_xRN
push #TEST_ROUTINE_EDE
push #TEST_ROUTINE_aEDE
nop
mov r13, r1
mov #0x0000, r5
nop
call @r1+ ;# CALL #TEST_ROUTINE_N (this has a funny behavior of nested call backward until SPECIAL_aRNi is reached)
nop
mov #0xb000, r15
# Addressing mode: x(SR)
#------------------------
mov #DMEM_252, r1 ;# Initialize stack pointer
push #TEST_ROUTINE_RN
push #TEST_ROUTINE_aRN
push #TEST_ROUTINE_aRNi
push #TEST_ROUTINE_N
push #TEST_ROUTINE_xRN
push #TEST_ROUTINE_EDE
push #TEST_ROUTINE_aEDE
nop
mov #0x0000, r5
mov #0x0000, r6
mov #0x0000, r7
call 4(r1) ;# CALL #TEST_ROUTINE_EDE (r7 = 0x2345)
mov r5, r7
mov #0x0000, r5
call 6(r1) ;# CALL #TEST_ROUTINE_xRN (r6 = 0xef01)
mov r5, r6
mov #0x0000, r5
call 10(r1) ;# CALL #TEST_ROUTINE_aRNi (r5 = 0x9abc)
nop
mov #0xc000, r15
/* ---------------------- END OF TEST --------------- */
end_of_test:
nop
br #0xffff
/* ---------------------- TEST FUNCTIONS --------------- */
TEST_ROUTINE_RN:
mov #0x1234, r5
ret
TEST_ROUTINE_aRN:
mov #0x5678, r5
ret
TEST_ROUTINE_aRNi:
mov #0x9abc, r5
ret
TEST_ROUTINE_N:
mov #0xabcd, r5
ret
TEST_ROUTINE_xRN:
mov #0xef01, r5
ret
TEST_ROUTINE_EDE:
mov #0x2345, r5
ret
TEST_ROUTINE_aEDE:
mov #0x6789, r5
ret
TEST_ROUTINE_SPECIAL_aRNi:
mov #0x159a, r5
sub #0x000a, r1
ret
/* ---------------------- INTERRUPT VECTORS --------------- */
.section .vectors, "a"
.word end_of_test ; Interrupt 0 (lowest priority)
.word end_of_test ; Interrupt 1
.word end_of_test ; Interrupt 2
.word end_of_test ; Interrupt 3
.word end_of_test ; Interrupt 4
.word end_of_test ; Interrupt 5
.word end_of_test ; Interrupt 6
.word end_of_test ; Interrupt 7
.word end_of_test ; Interrupt 8
.word end_of_test ; Interrupt 9
.word end_of_test ; Interrupt 10 Watchdog timer
.word end_of_test ; Interrupt 11
.word end_of_test ; Interrupt 12
.word end_of_test ; Interrupt 13
.word end_of_test ; Interrupt 14 NMI
.word main ; Interrupt 15 (highest priority) RESET
